Kim's Favorite

I am on chapter 35 and it's weird how fl's father aka the emperor bought new wife as soon as the old one died and he wasn't even seen during the funeral and he got new empress pregnant already when his own son was struggling to overcome his mother's death and he wasn't even with his son and when the backstory of fl's brother was shown emperor was never there, I may be overthrowing but things just doesn't add up for me.